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2. List of soft contact lens materials - Wikipedia

   en.wikipedia.org/wiki/List_of_soft_contact_lens...

   The first contact lenses were made of glass, in 1888. Initially the glass was blown but soon lenses were made by being ground to shape. For the first fifty years, glass was the only material used. The lenses were thin, yet reports of injury were rare. In 1938 perspex (polymethylmethacrylate, or PMMA) began to replace glass in contact lens ...

3. Mayo Clinic - Wikipedia

   en.wikipedia.org/wiki/Mayo_Clinic

   Website. mayoclinic.org. Mayo Clinic (/ ˈmeɪjoʊ /) is a private American academic medical center focused on integrated healthcare, education, and research. [4] It maintains three major campuses in Rochester, Minnesota; Jacksonville, Florida; and Phoenix / Scottsdale, Arizona. Mayo Clinic employs over 7,300 physicians and scientists, along ...

4. Polyvinylpyrrolidone - Wikipedia

   en.wikipedia.org/wiki/Polyvinylpyrrolidone

   PVP is used in some contact lenses and their packaging solutions. It reduces friction, thus acting as a lubricant, or wetting agent, built into the lens. Examples of this use include Bausch & Lomb's Ultra contact lenses with MoistureSeal Technology [8] and Air Optix contact lens packaging solution (as an ingredient called "copolymer 845"). [9]

5. Contact lens - Wikipedia

   en.wikipedia.org/wiki/Contact_lens

   A pair of contact lenses, positioned with the concave side facing upward. Putting contacts in and taking them out. One-day disposable contact lenses with blue handling tint in blister-pack packaging. Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used ...

6. Optics and vision - Wikipedia

   en.wikipedia.org/wiki/Optics_and_vision

   Optics and vision. Vision of humans and other organisms depends on several organs such as the lens of the eye, and any vision correcting devices, which use optics to focus the image. The eyes of many animals contains a lens that focuses the light of its surroundings onto the retina of the eye. This lens is essential to producing clear images ...

7. Mayo Clinic Hospital (Rochester) - Wikipedia

   en.wikipedia.org/wiki/Mayo_Clinic_Hospital...

   Mayo Clinic, Rochester, was ranked in the top 10 in all but one of 16 specialties, in the top 4 in 13 specialties, and was the #1 ranked hospital in 8 of the 12 data-driven specialties. This year U.S. News expanded their common procedures and conditions list to 9 individual measures, and Mayo was one of fewer than 70 hospitals to score High ...